Agenda - Council - 05/27/1980 - Laserfiche WebLink

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- 2 - Metropolitan System The extension to the Rum River is not necessary to serve the Brom and Dunham Oaks subdivisions since service to these developments is provided by the Anoka interceptor at Highway 47. The requested Rum River extension was estimated to cost $602,970 in 1978, which would likely have to come entirely from metropolitan funds. Issues In evaluating Anoka's request, three relevant issues should be recognized. Issue - 1 The timing of Andover's need for service through the requested Rum River extension, when the extension is connected to the existing Anoka Northeast interceptor. The Andover Comprehensive Sewer Plan anticipates service to western Andover through the Anoka interceptor. The timing of this service need has definite implications for Anoka's extension request. The attached letter from Chairman Weaver and Andover's response to it indicate Andover does not anticipate the need for service through extensions of the Anoka interceptor until the 1985-1990 time period. The MWCC 201 Northwest Area Study is currently evaluating metropoli- tan sewer service alternatives for western Andover. In addition to extending the Anoka interceptor to the Anoka Northeast interceptor, the Commission is also evaluating the alternative of serving western Andover through the Coon Rapids °interceptor. The preliminary findings of the 201 study are that service to western Andover will not be needed until after 1985. Furthermore, the projected 1990 flow from western Andover is only .31 mgd, compared to the design capacity of 3.24 mgd for the Rum River extension. Issue - 2 If the proposed corridor for the extension to the Rum River is preempted by the construction of local streets and utilities by Anoka, are there alternative locations to build the extension at some point in the future if it is needed to serve western Andover? Given that Andover's need for metropolitan sewer service to the western portion of the city is 5-10 years away, an analysis was made to determine if there are feasible alternative locations for construc- ting the Rum River extension at a later time. The attached letter from MWCC staff indicates there is, based on MWCC staff field investigations, a viable alternative corridor for the Rum River extension with comparible costs just south of the currently proposed alignment, and that the long-term availability of this alternative corridor precludes the immediate need for constructing the Rum River extension.